When is the due date to file Form 1120?
312 views | Last modified 12/22/2021 6:30:25 AM EST | Added by ExpressExtension Team

Applicable To
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Generally, all domestic corporations must file form 1120 by the 15th day of the 4th month after the end of its tax year.  This includes,

  • A corporation following calendar tax year (April 18, 2022)
  • A corporation with a fiscal year ending on any month except June 30.
  • A new corporation filing a short-period return
  • A corporation that has dissolved and filing a final return 

Note, however, that S corporations, Partnerships, and all C-corporation with a fiscal tax year ending June 30,  must file the tax return (1120S, 1065) by the 15th day of the 3rd month after the end of its tax year.  

A corporation with a short tax year ending anytime in June will be treated as if the short year ended on June 30, and must file by the 15th day of the 3rd month after the end of its tax year. 

In case, if you're an S corps or partnerships need additional time to file your income tax return after the regular due date, file Form 7004 to the IRS on March 15, and the last day for C corps to file for an extension is April 15. This gives you an automatic 6-month time to file your income tax return. 

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